<template>
  <section>
    <!--工具条-->
    <el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
      <el-form :inline="true" :model="filters">
        <el-form-item>
          <el-input v-model="filters.keyword" placeholder="关键字"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" v-on:click="search">查询</el-button>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleAdd">新增</el-button>
        </el-form-item>
      </el-form>
    </el-col>

    <el-table :data="departments" highlight-current-row v-loading="listLoading" @selection-change="selsChange" style="width: 100%;">

      <!--这是elementui提供的选择框，此选择框可以多选-->
      <el-table-column type="selection" width="55">
      </el-table-column>

      <el-table-column type="index" width="60">
      </el-table-column>
      <el-table-column prop="name" label="部门名称" width="120" >
      </el-table-column>
      <el-table-column prop="sn" label="部门编号" width="100" >
      </el-table-column>
      <el-table-column prop="state" label="状态" width="100" sortable>
        <!--scope：获取这一行的所有字段数据-->
        <template scope="scope">
          <span style="color: green" v-if="scope.row.state === 1">开启</span>
          <span style="color: red" v-else-if="scope.row.state === 0">关闭</span>
          <span v-else>未知</span>
        </template>
      </el-table-column>
      <el-table-column prop="manager.username" label="负责人" width="120" >
      </el-table-column>
      <el-table-column prop="parent.name" label="上级部门" min-width="180" >
      </el-table-column>
      <el-table-column label="操作" width="150">
        <template scope="scope">
          <el-button size="small" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
          <el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!--工具条-->
    <el-col :span="24" class="toolbar">
      <!--
        disabled：是否不可点击
          true：不可点击
          false：可点击
      -->
      <el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0">批量删除</el-button>
      <el-pagination
          layout="total, sizes, prev, pager, next"
          @current-change="handleCurrentChange"
          :current-page="currentPage"
          :page-size="pageSize"
          :total="total"
          @size-change="handleSizeChange"
          :page-sizes="[5, 10, 15, 30, 50]"
          style="float:right;">
      </el-pagination>
    </el-col>

    <!--编辑界面
        v-model：在1.X的时候是控制此标签是否展示，但是2.X之后是双向绑定
        :rules="editFormRules"：表单校验规则绑定那个规则对象
          prop="name"：此字段运用表单校验规则中的那个规则
    -->
    <el-dialog :title="title" :visible.sync="editFormVisible" :close-on-click-modal="false">
      <el-form :model="editForm" label-width="80px" :rules="editFormRules" ref="editForm">
        <el-form-item label="部门名称" prop="name">
          <el-input v-model="editForm.name" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="部门编号" prop="sn">
          <el-input v-model="editForm.sn" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="是否启用">
          <el-radio-group v-model="editForm.state">
            <el-radio class="radio" :label="1">启用</el-radio>
            <el-radio class="radio" :label="0">禁用</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="部门经理">
          <el-select v-model="editForm.manager" value-key="id" placeholder="请选择">
            <!--
              :key：必须指定为你每条数据中的唯一字段
              :label：用户选择之后在下拉框中展示的值
              :value：用户选中值之后要提交时，使用那个字段提交
            -->
            <el-option
                v-for="item in cities"
                :key="item.id"
                :label="item.username"
                :value="item">
              <span style="float: left">{{ item.username }}</span>
              <span style="float: right; color: #8492a6; font-size: 13px">{{ item.phone }}</span>
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="上级部门">
          <!--
            el-cascader：级联选择器框
            options：级联的数据，指向模型层的options字段
          -->
          <el-cascader
              v-model="editForm.parent"
              :options="options"
              :props="{ checkStrictly: true, value:'id', label:'name' }"
              clearable></el-cascader>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click.native="editFormVisible = false">取消</el-button>
        <el-button type="primary" @click.native="editSubmit" :loading="editLoading">提交</el-button>
      </div>
    </el-dialog>

  </section>
</template>

<script>
import util from '../../common/js/util'
//import NProgress from 'nprogress'
import { getDepartmentListPage, removeDepartment, batchRemoveDepartment, editDepartment, addDepartment } from '../../api/api';

export default {
  data() {
    return {
      // 上级部门的级联集合数据
      options: [],
      filters: {
        keyword: ''
      },
      departments: [],
      total: 0,
      currentPage: 1,
      pageSize: 5,
      listLoading: false,
      sels: [],//列表选中列
      title:"",
      editFormVisible: false,//编辑界面是否显示
      editLoading: false,
      // 表单校验规则
      editFormRules: {
        name: [
          // 为空校验
          { required: true, message: '请输入部门名称', trigger: 'blur' }
        ],
        sn: [
          // 为空校验
          { required: true, message: '请输入部门编号', trigger: 'blur' }
        ]
      },
      //编辑界面数据
      editForm: {
        id:null,
        sn:"",
        name:"",
        state:0,
        manager:{},
        parent:{}
      },
      cities: []
    }
  },
  methods: {
    // 获取部门树数据
    getDepartmentTree(){
      this.$http.get("/department/tree")
          .then(result=>{
            this.options = result.data;
          })
    },
    getEmployees(){
      this.$http.get("/employee")
          .then(result=>{
            this.cities = result.data;
          })
    },
    // 高级查询函数
    search(){
      // 如果是高级查询，为了避免用户的数据不够展示，我们需要初始化页码为1，不管有没有其他页数据，我们默认展示第一页
      this.currentPage = 1;
      // 页面初始化完成之后，直接调用查询列表数据函数即可
      this.getDepartments();
    },
    handleCurrentChange(val) {
      // 当用户点击页面的时候，我们需要同步将模型层中的当前页面字段的值改为用户选中的值
      this.currentPage = val;
      this.getDepartments();
    },
    handleSizeChange(val) {
      // 当用户点击页面的时候，我们需要同步将模型层中的当前页面字段的值改为用户选中的值
      this.currentPage = 1;
      this.pageSize = val;
      this.getDepartments();
    },
    //获取部门列表
    getDepartments() {
      // 封装请求参数
      let para = {
        currentPage: this.currentPage,
        pageSize: this.pageSize,
        keyword: this.filters.keyword
      };
      // 开启列表忙等
      this.listLoading = true;
      // 发起Axios请求
      this.$http.post("/department", para)
          .then(result=>{
            // 0.关闭忙等
            this.listLoading = false;
            // 1.给列表模型层对象赋值
            this.departments = result.data.rows;
            // 2.给total赋值
            this.total = result.data.total;
          })
          .catch(result=>{
            this.$message({
              message: '系统繁忙，请重试！',
              type: 'error'
            });
          })
    },
    //删除
    handleDel: function (index, row) {
      this.$confirm('确认删除该记录吗?', '提示', {
        type: 'warning'
      }).then(() => { // 点击确定的时候进入then
        // 1.开启列表忙等
        this.listLoading = true;
        // 2.发送Axios请求
        this.$http.delete("/department/"+row.id)
            .then(result=>{
              // 1.关闭忙等框
              this.listLoading = false;
              if(result.data.success){ // 绝对删除成功
                this.$message({
                  message: result.data.message,
                  type: 'success'
                });
              }else { // 不一定删除成功，我们也不知道删除成功没有
                this.$message({
                  message: result.data.message,
                  type: 'error'
                });
              }
              // 3.改变当前页页码
              this.currentPage = 1;
              // 4.调用查询列表函数
              this.getDepartments();
            })
            .catch(result=>{
              this.listLoading = false;
              this.$message({
                message: '系统繁忙，请重试！',
                type: 'error'
              });
            })
      }).catch(() => {
        // 取消进catch
      });
    },
    //显示编辑界面
    handleEdit: function (index, row) {
      this.title = "编辑";
      // 1.弹出编辑框
      this.editFormVisible = true;

      // 2.克隆对象到我们模型层的对象中
      this.editForm = Object.assign({}, row);
      // 3.修改parent字段为[2,5,6],用于回显 /2/5
      let arr = this.editForm.dirPath.split("/"); // ['', '2', '5']
      let echoArr = [];
      for(var i = 1;i < arr.length - 1;i++){
        // 将字符Id,转换为int类型放入到新数组中
        echoArr.push(parseInt(arr[i]));
      }
      // 4.将新数组赋值给this.editForm.parent字段
      this.editForm.parent = echoArr;
    },
    //显示新增界面
    handleAdd: function () {
      this.title = "新增";
      this.editFormVisible = true;
      this.editForm = {
        id:null,
        sn:"666",
        name:"小哪吒",
        state:0,
        manager:{},
        parent:{}
      };
    },
    //编辑
    editSubmit: function () {
      // 主动开启表单校验
      this.$refs.editForm.validate((valid) => {
        if (valid) {
          this.$confirm('确认提交吗？', '提示', {}).then(() => {
            // 1.开启按钮忙等
            this.editLoading = true;
            // 2.从模型层中的editForm对象中克隆一个新对象
            let para = Object.assign({}, this.editForm);
            // 3.当用户选择了上级部门，那么我们才做数据转换操作
            if (para.parent){
              // 3.1.获取到用户选择的上级部门数组中的最后一个数据，封装到对象中，赋值给parent字段
              para.parent = {id:para.parent[para.parent.length - 1]}
            }
            // 4.发送Axios请求
            this.$http.put("/department", para)
                .then(result=>{
                  // 1.关闭按钮忙等
                  this.editLoading = false;
                  // 2.关闭模态框
                  this.editFormVisible = false;
                  if(result.data.success){ // 新增/修改成功
                    this.$message({
                      message: result.data.message,
                      type: 'success'
                    });
                  }else { // 不一定新增/修改成功，我们也不知道新增/修改成功没有
                    this.$message({
                      message: result.data.message,
                      type: 'error'
                    });
                  }
                  // 3.改变当前页页码
                  this.currentPage = 1;
                  // 4.调用查询列表函数
                  this.getDepartments();
                })
                .catch(result=>{
                  this.editLoading = false;
                  this.$message({
                    message: '系统繁忙，请重试！',
                    type: 'error'
                  });
                })
          });
        }
      });
    },
    selsChange: function (sels) {
      this.sels = sels;
    },
    //批量删除
    batchRemove: function () {
      // 获取用户选中行的所有Id
      var ids = this.sels.map(item => item.id);
      this.$confirm('确认删除选中记录吗？', '提示', {
        type: 'warning'
      }).then(() => {
        // 开启列表忙等
        this.listLoading = true;
        // 发送Axios请求
        this.$http.patch("/department", ids)
            .then(result=>{
              // 1.关闭忙等框
              this.listLoading = false;
              if(result.data.success){ // 绝对删除成功
                this.$message({
                  message: result.data.message,
                  type: 'success'
                });
              }else { // 不一定删除成功，我们也不知道删除成功没有
                this.$message({
                  message: result.data.message,
                  type: 'error'
                });
              }
              // 3.改变当前页页码
              this.currentPage = 1;
              // 4.调用查询列表函数
              this.getDepartments();
            })
            .catch(result=>{
              this.listLoading = false;
              this.$message({
                message: '系统繁忙，请重试！',
                type: 'error'
              });
            })

      }).catch(() => {

      });
    }
  },
  mounted() {
    // 获取部门列表数据
    this.getDepartments();
    // 获取员工列表数据
    this.getEmployees();
    // 获取部门树数据集合
    this.getDepartmentTree();
  }
}

</script>

<style scoped>

</style>